The interior of the plane looked like a cross between a private luxury jet and a space mission control room.

The Gulfstream IV cruised at 43,000 feet, high above a seemingly peaceful layer of thick clouds that stretched to the horizon.

Crew members in blue jumpsuits stared at computer screens that revealed their hidden target miles below: a powerful atmospheric river that was churning across the Pacific Ocean toward California, bearing torrential rains and fierce winds.